Cogswell 1949 Peromyscus maniculatus Big Lagoon, Humboldt Co., Calif. Aug. 9 Caught 4 in line of traps set last night: one adult ♀ (=# 6), saved a 3 young ♂♂, 1 of which was only half-size, 2 of which show beginnings of brown pelage of adult on sides. The traps were all set under the edge of brush or blackberry thickets except the one in which the adult was caught, which was on a small mossy log about 8 inches in diameter, 1 foot above ground partially under canopy of dead things and blackberry. Aug. 12. Caught 4 in line of 55 traps, in sites as indicated: - ♂, changing from juvenile to adult pelage - 2 ft. from water on side of a 15 ft. diameter thicket of berry bushes, ferns around base of elder tree, about 2 ft. from water. - small young (solid gray) - on big log under edge of canopy of berry bush & alder sapling thicket ♂♂ at border of a small opening in the thicket 15 yards from the main edge. - gray young - on mossy log 1 ft. above water amid jumble of logs crossing sluggish stream under a 20 ft. Salix sitchensis. - young - 3 ft. within salmonberry, blackberry, & nettle thicket at border of 20 ft. wide grassy strip. elder trees nearby. Aug. 13 one young one caught in trap near stream in redwood forest, 300 ft. alt.